单项选择题
A.are B.are not C.isn't D.aren't
The next train to Beijing is（）to arrive at a.m.A.due ...
单项选择题The next train to Beijing is（）to arrive at a.m.
A.due B.sure C.early D.late
The news made the old lady very（）A.sadder B.sadC.s...
单项选择题The news made the old lady very（）
A.sadder B.sad C.sadly D.sadness
The new assembly line having been adopted, the factory ...
单项选择题The new assembly line having been adopted, the factory produced（）cars in as the year before.
A.as twice many B.twice many as C.twice as many D.as many as twice
